Entering Element Input Data

Element input data refers to the data associated with the elements in the model. It can be entered using the Property Editor, as described in Lesson 2, through FlexTables, or through the Alternatives Editor, as described in the “ Editing Alternatives” topic.

Each method offers different advantages:

• The Property Editor is easily accessible and can be positioned next to the drawing pane so you can see the visual context of the element whose data is being modi-fied.

• The FlexTables are categorized according to element type, so they are best suited for entering data for large groups of elements at once. They also provide global editing and filtering functionality to allow you to enter data common to a large number of elements quickly and easily.

• The Alternatives Editor allows you to use data inheritance functionality

(discussed in “ Editing Alternatives”) and the categorized nature of the data (alter-natives are grouped according to the type of data they contain, such as physical data, inflow data, hydrologic data, etc.), can be useful.

Let’s begin by using the Property Editor to define the attributes for the individual elements in the model.

If you’ve already completed Lesson 2, you can continue using the same model. Other-wise, begin by clicking the File/Open button, then browse to the C:/Program Files/

Bentley/SewerGEMS V8i/Lessons folder, highlight Lesson_3_1.swg, then click Open.

1. Highlight CB-1.

2. The fields that are available for a given element type vary depending on the settings in other fields. Change the Structure Shape Type to Rectangular Struc-ture. Note that the Diameter field disappears, and a Length field and a Width field appear in its place.

3. Change the Inlet Type to Inflow-Capture Curve.

4. Click the ellipsis button in the Inflow-Capture Curve field to open the Inflow Capture Curve dialog.

5. Using Windows Explorer, browse to the C:/Program Files/Bentley/SewerGEMS V8i/Lessons folder and open the text document entitled CB Inlet Data.txt. High-light all of the data in the text file, and press Ctrl+C on your keyboard to copy the data.

6. Back in the Inflow-Capture Curve dialog, press Ctrl+V to copy the data into the dialog. (If the copy command doesn’t work immediately, click the first column heading, hold down the mouse button, and drag the cursor over to the second column to highlight both columns, then press Ctrl+V).

7. Click OK in the Inflow-Capture Curve dialog to close it.

8. Enter the following data in the specified fields:

9. Highlight CB-2.

10. Change the Structure Shape Type to Rectangular Structure, leaving the default values for Length and Width at 3.00 ft.

11. Change the Inlet Type to Inflow-Capture Curve.

12. Click the ellipsis button in the Inflow-Capture Curve field to open the Inflow Capture Curve dialog. Press Ctrl+V to copy the data you copied during step 5 into the dialog.

Table 3-1: CB-1 Attribute Values

Field Name Value

Ground Elevation 106.00 ft.

Invert Elevation 102.00 ft.

Lesson 3: Entering Data

13. Enter the following data in the specified fields:

14. Highlight MH-1.

15. Enter a local inflow (local inflow is inflow that occurs at a specific element, as opposed to the inflow from global storm events, which is applied over the whole model). Click the ellipsis button in the Inflow Collection field.

16. In the Inflow Collection dialog that appears, click the New button, then click Hydrograph Inflow in the submenu that appears.

17. Using Windows Explorer, browse to the C:/Program Files/Bentley/SewerGEMS V8i/Lessons folder and open the text document entitled MH1 Inflow Collec-tion.txt. Highlight all of the data in the text file, and press Ctrl+C on your keyboard to copy the data.

18. Back in the Inflow-Collection dialog, press Ctrl+V to copy the data into the dialog. (If the copy command doesn’t work immediately, click the first column heading, hold down the mouse button, and drag the cursor over to the second column to highlight both columns, then press Ctrl+V).

19. Click OK in the Inflow Collection dialog to close it.

Table 3-2: CB-2 Attribute Values

Field Name Value

Ground Elevation 101.00 ft.

Invert Elevation 97.00 ft.

20. Enter the following data in the specified fields:

For the other elements in the model, of which there are more than one of each type, let’s enter the data using FlexTables.

21. Click the View pulldown menu and select the FlexTables command.

22. Under the Tables - Predefined node, double-click the Manhole Table.

23. Enter the following data in the Manhole Table dialog that appears:

24. Change the Label for MH-6 to Diversion Chamber. When you have entered the data, close the Manhole Table. In the FlexTables dialog, double-click the Catch-ment Table node.

Table 3-3: MH-1 Attribute Values

Field Name Value

Ground Elevation 107.00 ft.

Invert Elevation 103.00 ft.

Diameter 3.00 ft.

Table 3-4: Manhole Attributes

Element Ground

Elevation

Invert Elevation

Diameter)

MH-2 105.00 ft 101.00 ft 3.00 ft.

MH-3 103.00 ft 99.00 ft 3.00 ft.

MH-4 100.00 ft 96.00 ft 3.00 ft.

MH-5 99.00 ft 95.00 ft 3.00 ft.

MH-6 97.00 ft 93.00 ft 3.00 ft.

Lesson 3: Entering Data

25. Enter the following data in the Catchment Table dialog that appears (if one or more attributes does not appear in the FlexTable by default, you will have to add them to the FlexTable. For instructions on adding attributes to a FlexTable, see Lesson 1 Part 2):

26. When you have entered the data, close the Catchment Table. In the FlexTables dialog, double-click the Conduit Table node.

27. Enter the following data in the Conduit Table that appears (note that the stop and start inverts are defined by the values of the adjacent nodes, since the Set Invert To Start/Stop Node fields are set to True by default):

Table 3-5: Catchment Attributes

Element Area (acres) SCS CN Tc (hours)

CM-1 10.000 80.000 0.400

CO-1 True 250.00 24.0 Automatically

Assigned

CO-2 True 50.00 24.0 Automatically

Assigned

CO-3 True 500.00 30.0 Automatically

Assigned

CO-4 True 500.00 30.0 Automatically

Assigned

CO-5 True 50.00 24.0 Automatically

Assigned

28. When you have entered the data, close the Conduit Table.

29. Click on CO-9 in the drawing pane.

30. In the Properties Editor, change the Has Start Control Structure? value to True. Click the ellipsis button in the Start Control Structure field.

31. In the Conduit Control Structure dialog that appears, click the New button and select Weir from the submenu.

32. Change the Crest Elevation to 94.50 ft. Change the Structure Top Elevation to 97.00 ft. Change the Weir Length to 2.00 ft. Click the Close button.

33. In the drawing pane, an icon appears on the upstream end of CO-9 to indicate that a control is present.

CO-6 True 500.00 36.0 Automatically

Assigned

CO-7 True 300.00 36.0 Automatically

Assigned

CO-8 True 300.00 30.0 Automatically

Assigned

CO-9 True 300.00 30.0 Automatically

Assigned Table 3-6: Conduit Attributes

Element Has User Defined Length

User Defined Length (ft.)

Diameter (in)

Start Invert (ft.)

Lesson 3: Entering Data

34. In the FlexTables dialog, double-click the Outfall Table node.

35. In the Outfall Table dialog that appears, enter the following data:

This concludes this part of the lesson. The next part continues where this part leaves off, so you can keep the same project open if you plan to continue immediately. If you plan to begin the next part at a later time, you can either save the current project or use the Lesson_3_2.swg project located in the C:/Program Files/Bentley/SewerGEMS V8i/Lessons folder.